chmdisk

Use the chmdisk command to modify the name or IBM® Easy Tier® settings for a managed disk (MDisk).

Syntax

Read syntax diagramSkip visual syntax diagram
>>- chmdisk -- --+-------------------------+-- ----------------->
                 '- -name -- new_name_arg -'      

>--+---------------------------+-------------------------------->
   '- -tier --+- ssd --------+-'   
              +- enterprise -+     
              '- nearline ---'     

>--+--------------------------------+--+- mdisk_id ---+--------><
   '- -easytierload --+-default---+-'  '- mdisk_name -'   
                      +-low-------+                       
                      +-medium----+                       
                      +-high------+                       
                      '-very_high-'                       

Parameters

-name new_name_arg
(Optional) Specifies the new name to be applied to the managed disk.
-tier ssd | enterprise | nearline
(Optional) Specifies the new tier of the MDisk. The values are:
ssd
Specifies an SSD (or flash drive) hard disk drive or an external MDisk for the newly discovered or external volume.
nearline
Specifies an nearline hard disk drive or an external MDisk for the newly discovered or external volume.
enterprise
Specifies an enterprise hard disk drive or an external MDisk for the newly discovered or external volume.
-easytierload default | low | medium | high | very_high
(Optional) Specifies the Easy Tier load (amount) to place on a non-array MDisk within its tier.
If Easy Tier is either overusing or under-utilizing a particular MDisk, modify the easy_tier_load value to change the load size.
Note: Specifying default returns the performance capability to the value used by the system. Specify very_high only if the MDisk tier is ssd.
mdisk_id | mdisk_name
(Required) Specifies the ID or name of the managed disk to modify.

Description

This command modifies the attributes of a managed disk.

An invocation example

chmdisk -tier ssd mdisk13 

The resulting output:

No feedback

An invocation example

chmdisk -tier nearline mdisk0

The resulting output:

MDisk Group, id [13], successfully created

An invocation example

chmdisk -easytierload high mdisk0

The resulting output:

MDisk Group, id [13], successfully created